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NrrED Sra'rEsv PATEN'i` Ericeo PAUL SCHNEIDER, HENRY TRENKAMP, ANDNICOLAS FLAMMANG, OF CLEVE- LAND, OHIO; SAID FL'AMMANG ASSIGNOR TO SAIDSCHNEIDER AND TRENICAMI).

` SPECIFICATION forming part of Letters Patent No. 301,395, dated J'ulyl, 1884.

and State of Ohio, have invented certain new and useful Improvements inInjectors; and-we do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it pertains to make and use it, referencebeing Vhad to the accompanying drawings,

` which form apart of this specification.

Our invention relates to an improvement in injectors; and it consists,first, in the combination ofthe steam-valve, which has its stem soformed as to operate a spring-actuated steam-valve, which controls thepassage of the steamthroughtheforce-tubes, with the springvalve; second,in the method of reducing the amount of water forced into the boiler byforming a return water way or passage, by means of which the water isdrawn back into the lift-chamber, instead of being forced into theboiler; third, in the combination of the lift-chamber, a passage-,waybetween the liftchamber and the reservoir, and a valve for controllingthe flow of waterbetween the two 5 fourth, in the combination ofv thereservoir, the lifting-chamber, and the force-tubes with the relief-valve which is placed between the reservoir and the lifting-chamber;fifth, in a movable force-tube, which is forced backward from its seatto allow a free escape of the overflow, but which is drawn back to its`seat when the water is being forced into the boiler; sixth, in thespring-supported auto matically-closing stop checlovalve for regulatingthe mferilow,` all of which will be more' fully described hereinafter.

Figure l represents a longitudinal vertical section of vaninjector'embodying our invention. Fig. 2 is a vertical cross-section ofFig. 1, taken on the line l 2.

The body of the injector consists of three parts, X Y Z, which areunited by means of To the part X is connected the steam-pipe at W, andthe passage of the steam through this pipe is controlled by theplug-valve Q. The stem P of this valve Q is shaped as shown, for thepurpose of operating the slotted steam-valve E. This valve E passeshorizontally through the 'part X, and is held forced forward, when leftAppncatin nieu May 19, 1884. (Maan.)

free to move, by means of the coil-spring R, which is placed in the capS. The inner end of this valve E is made in the form of a plug, and isintended to control the passage of the steam through the force-tube C.That portion of the valve E which passes through the contracted portionT of the part X is provided with ribs, so as not to interfere with thefree passage of the steam at this point. The central portion, Y, of thebody is provided with the two partitions U V, and through' the center ofboth of these partitions is formed the force-tube C. Through each of thepartitions, to' one side of the force-'tube C, are formed the twolift-tubes A B, through which steam is forced when the force-tube isclosed, for the purpose of first lifting the water into the chamber Jwhen getting the injector ready for use.

These two lift-tubes A B are made removable,

as shown, so that they can be removed and replaced by others at anytime. Also, formed through the partition U is an opening, Q', in whichis placed a valve, K, which may be made spring-actuated or not, as maybe preferred. This valve is for the purpose of allowing the water topass through the liftchamber J into the reservoir-,chamber G, for thepurpose of preventing avacuum from being formed in the reservoir whilethe steam is passing through the force-tubes C D, for the purposeofforcing the water into the boiler.

Between the parts Y Z is formed the chamber G, which forms a reservoir,into which the water is first forced by the lifting-tubes A B. Passinghorizontally through the part Z is the endwise-moving force-tube D,which 'is made ribbed along its sides, and which is provided with aseat, Q, for the purpose of shutting off all of the flow of water aroundthe however, the steam is being forced through v the force-tubes C D,the force-tube D is drawn backward to its seat both by more or less of asuction from the reservoir G and by a pressure from the boiler. Theloverflow consists of the tube G', in which is placed the valve M, whichis held against its seat by spring N. The pressure of this spring Nagainst the IOO valve is controlled by the thumb-nut O, which nut isheld in the place to which it is adjusted by the jam-nut O. By means ofthe thumbnut the pressure of the spring N against the under side of thevalve M is controlled at will.

When ,the overflow does not overcome the pressure at which the valve Mis adjusted, it iiows freely around the valve.

When the steam is being forced through the force-tubes C D beyond acertain pressure', a vacuum is liable to be formed in the reservoir G,and this vacuum greatly interferes with the proper working of theinjector. In order to prevent this, way Q is made between thelifting-chamber J and the reservoir G, and this passage is controlled bymeans of the relief-valve K. When it is desired to regulate the amountof water which shall be fed to the boiler, the plug-valve F is opened toany desired extent, and then, in proportion to the extent that thisvalve is opened, aportion of the water which has been forced into thereservoir will pass through the passages L L back into the lift-chamberJ again, instead of being forced into the boiler.

The operation of the injector is as follows: The valve F must rst beclosed. The valve Q is given a quarter-turn,which allows enough steam topass into the chamber A and to pass through the lift-tubes A B to raisethe water into the lift-chamber J and force it in-y to the reservoir G.rIhis water passes around and between the iianges or ribs on the outsideof the 4movable force-tube D, and forces it away from its seat. When thepressure of this water is sufficiently great to overcome the pressure ofthe spring-valve M, the overiiow passes freely away. The vquarter-turnwhich has been given to the valve Q docs not affect the valve E whichcloses the force-tube C, and hence no water is being forced through thetubes C D, although the injector is lifting to its full capacity anddischarging a cold overow. When the water is to be forced into theboiler, the Vvalve Q is given another quarter-turn, when the cam of thestem l? forces the valve E backward against the pressure of the springB, when the steam passes through the force-tubes C D, as well as throughthe small tubes AB. 'Ihe forcible passage of the steam through theforce-tube Cinto the tube D creates a vacuum in the reservoir G, andthus draws the movable tube D back, so as to shut off the cold or rstoverfiow, and the water then passes through the tube D into the boiler.When the tube D is drawn endwise by the vacuum in the chamber G, all ofthe overflow is prevented around its inner end; but the overilow aroundthe valve M continues, because the water can pass toward the overflowfrom the tube aroundthe outer end. When the pressure exceeds from threeto five pounds, the spring N allows the valve M to sink downward, andthus shut off all further flow of water-around it. The water is thenforced into the boiler at the full capacity of the machine.` When it isdesired to grade or opened.

reduce the quantity of water which is fed to the boiler, the valve F isopened, when the lifting-tubes A B will draw water from the reservoir Gthrough the passages L L in proportion to the extent the valve F hasbeen By this means the supply to the boiler can be reduced fullyone-half its full capacity. To meet and remedy the evils arising fromvarying steam-pressures, the reliefvalve K is used. The variationV inthe steampressure causes the machine to discharge faster than thecapacity of the lifting-tubes to supply, land especially when themachine happens to be working with the valve F partially open. Thisrelief-valve opens automatically by water-pressure in thelifting-chamber J, and supplies any deficiency of the water .in thereservoir G, and thus automatically adjusts all differences caused byvarying steampressures between the lift and the force of any injector.

Having thus described our invention, we claim- 1. In an injector, thecombination of the valve Q, provided with a suitably-shaped stem, withthe spring-actuated valve E, the central force-tube, and thelifting-tubes, substantially as shown.

2. The method described of regulating the amount of water fed to theboiler, consisting in forcing a portion of the water from the reservoirlocated between the lifting-chamber and the overflow back into thelifting-chamber, substantially as described.

3. In an injector, the combination of the lift-tubes, the lift-chamberJ, the reservoir G, water-passages between the reservoir and thelift-chamber, and the valve for controlling IOO the flow of waterthrough these passages, substantially as set forth.

4. In an injector, an endwise-movable forcetube, D, which is made toautomatically cut off the overflow by the vacuum formed in thereservoir, substantially as shown.

5. In an injector, the combination of the force-tubes C D and aspring-actuated reliefvalve, .the tube D being made movable endwise,substantially as set forth.

6. In an injector, the combination of the steam-valves Q., E,lforce-tubes C D, the tube D being made movable endwise, the lifting--tubes,the relief-valve, and the spring-actuated overiiow-valve,substantially as described.

7. The combination of the lift-chamber J, the reservoir G, theforce-tubes, the waterpassages between the reservoir andv theliftchamber, and the valve for controlling these passages, substantiallyas shown.

In testimony whereof we affix our signatures in presence of twowitnesses.

Witnesses:

ERNsT C. SoHwAU, GEORGE II. SOHWAU.

IIO

